A5001524483- Ferroelectric and Piezoelectric Materials
- Microwave Dielectric Ceramics Synthesis
- Multiferroics and related materials
- Dielectric properties of ceramics
- Acoustic Wave Resonator Technologies
- Dielectric materials and actuators
- Advanced Photocatalysis Techniques
- Gas Sensing Nanomaterials and Sensors
- Electronic and Structural Properties of Oxides
- ZnO doping and properties
- Magnetic and transport properties of perovskites and related materials
- Physics of Superconductivity and Magnetism
- Advanced Sensor and Energy Harvesting Materials
- Transition Metal Oxide Nanomaterials
- Advanced Memory and Neural Computing
- TiO2 Photocatalysis and Solar Cells
- Ga2O3 and related materials
- Perovskite Materials and Applications
- Advancements in Solid Oxide Fuel Cells
- Magnetic properties of thin films
- Semiconductor materials and devices
- Anodic Oxide Films and Nanostructures
- Photonic Crystals and Applications
- Conducting polymers and applications
- Electrical and Thermal Properties of Materials
Xi’an University
2016-2025
Xi'an University of Technology
2016-2025
Materials Science & Engineering
2025
Technical University of Darmstadt
2018-2019
Northwestern Polytechnical University
2010-2014
University of Sheffield
2013
Bismuth sodium titanate (BNT) ceramics have outstanding strain responses but are unfavorable for applications in high-sensitivity displacement actuators due to large negative resulting from irreversible changes their phase transition and domain structure. Here, (1-<em>x</em>)Bi<sub>0.50</sub>Na<sub>0.41</sub>K<sub>0.09</sub>TiO<sub>3</sub>-<em>x</em>NaNbO<sub>3 </sub>(BNKT-<em>x</em>NN) solid solutions were prepared promote the properties through strategy of modulating boundary structures....
Piezo-catalysis is a potently environmental remediation method that converts mechanical vibrations into chemical activity, offering advantages in terms of economy and sustainability. However, the non-polar nature many materials due...
New high temperature Aurivillius piezoelectrics Na0.5NdxBi2.5–xNb2O9 (NDBNx, x = 0.1, 0.2, 0.3, and 0.5) with Nd substitution for Bi at the A site were synthesized using a solid state reaction process. Crystal structures of NDBN0.2 NDBN0.5 refined Rietveld method powder X-ray diffraction, they crystallized in orthorhombic space group A21am [a 5.48558(8) Å, b 5.46326(9) c 24.8940(4) Z 4 5.46872(5) 5.46730(5) 24.80723(25) NDBN0.5], room temperature. The refinement results Raman spectroscopy...
Abstract Na 1/2 Bi TiO 3 (NBT) based ceramics are amongst the most promising lead‐free ferroelectric materials. It was expected that defect chemistry and effect of doping NBT would be similar to observed for lead materials, however, acceptor does not hardening. Instead, high oxygen ionic conductivity is induced. Nevertheless, solid solutions with BaTiO (BT), which more relevant respect applications, such a drastic change electrical properties has been so far. To rationalize difference in...
(1-x)(0.8Bi1/2Na1/2TiO3-0.2Bi1/2K1/2TiO3)-xBi(Ni2/3Nb1/3)O3 (BNKT-xBNN) solid solution ceramics were fabricated by high temperature solid-state reaction method. All the compositions possess relaxor ferroelectric features, among which ergodic BNKT-0.02BNN exhibits large repeatable electrostrain value Suni = 0.51% at electric field of 65 kV/cm, with piezoelectric stain coefficient d33∗ 890 pm/V 45 while non-ergodic present unrepeatable strain response. Based on field-composition phase diagram,...
It is a challenge to obtain highly tunable multifunctional performances in one ferroelectric system by simple approach meet the miniaturization, integration, and functionalization requirements of advanced electronic components. Herein, rare earth erbium (Er) modulated 0.9K0.5Na0.5NbO3-0.1Sr(1-x)ErxTi(1-x/4)O3, (0.9KNN-0.1ST: xEr) transparent-photoluminescent-ferroelectric energy storage ceramics are prepared solve this problem. The effect lattice distortion oxygen vacancies Er doping on...
Abstract Dielectric ceramics with both excellent energy storage and optical transmittance have attracted much attention in recent years. However, the transparent Pb‐free energy‐storage were rare reported. In this work, we prepared relaxor ferroelectric (1 − x )Bi 0.5 Na TiO 3 – NaNbO (BNT– NN) by conventional solid‐state reaction method. We find NN‐doping can enhance polarization breakdown strength of BNT suppressing grain growth restrained reduction Ti 4+ to 3+ . As a result, high...
This work designs a new system (1-x)Na0.5Bi0.5+yTiO3-xNaTaO3 with nonstoichiometric bismuth ratio, which is used as dielectrics of ceramics capacitors. Phase structure evolution characterized using XRD, Raman and TEM. Dielectric resistant properties are investigated increasing concentration NaTaO3. With these investigations, the defect chemistry rationalized their respective impact on capacitor elucidated. The optimized composition 0.8Na0.5Bi0.51TiO3-0.2NaTaO3 possesses an ultra-wide...
Modified ultrahigh-temperature piezoelectric ceramics, Ca1−5xLi2xNd2x□xBi2Nb2−2xScxWxO9−1.5x (CBNO-LiNd-ScW-x, x = 0, 0.01, 0.02, 0.03, 0.04; □ represented A-site vacancies), were synthesized by a traditional solid-state reaction process. XRD Rietveld refinement, TEM, HRTEM and Raman spectroscopy used to characterize the crystal structures domain of prepared ceramics. The lithium/neodymium (Li/Nd) scandium/tungsten (Sc/W) co-substitution as well existence small amounts vacancies...